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...luster internal communication. #####vdbench setup##### hd=default,vdbench=/root/vdbench/,user=root,shell=ssh #hd=hd1,system=10.254.3.xx #hd=hd2,system=10.254.3.xx fsd=fsd1,anchor=/mnt/smalltest1/smalltest/,depth=2,width=100,openflags=o_direct,files=100,size=64k,shared=yes fwd=format,threads=256,xfersize=xxx fwd=default,xfersize=xxx,fileio=random,fileselect=random,rdpct=60,threads=256 #fwd=fwd1,fsd=fsd1,host=hd1 #fwd=fwd2,fsd=fsd1,host=hd2 rd=rd1,fwd=fwd*,fwdrate=max,format=restart,elapsed=600,interval=1 1) Use *o_direct* to bypass cache 2) More than 256 threads show no affect in this test 3) To...

The problem occurs after an update of 8-stable from r248120 to r252111. Sometimes shutdown hangs: Waiting (max 60 seconds) for system process `vnlru' to stop...done Waiting (max 60 seconds) for system process `bufdaemon' to stop...done Waiting (max 60 seconds) for system process `syncer' to stop... Syncing disks, vnodes remaining...0 0 done All buffers synced. >From the kernel